1. CRUSH chocolate sandwich cookies in large resealable plastic bag with rolling pin or in food processor.
2. POUR milk into large bowl. Add dry pudding mixes. Beat with wire whisk 2 minutes or until well blended. Let stand 5 minutes. Gently stir in 3 cups of the whipped topping and half of the crushed cookies. Spoon into 13x9-inch dish; sprinkle with the remaining crushed cookies.
3. REFRIGERATE 1 hour or until ready to serve. Decorate creme sandwich cookies with decorating gel to resemble tombstones; stand up in top of dessert. Add candies. Drop remaining whipped topping by spoonfuls onto dessert to resemble ghosts. Store leftover dessert in refrigerator.